WebRequest giving 301 XML document not valid when Curl worked fine

Question

I am trying to send an xml formatted document that I create to a phone and I keep getting a response back of 301 XML document not valid. I went on the W3C website and tested the string and it seems fine... here it so people see it.

I was using php orgionally with cURL and here is what that looked like.

       XMLData = urlencode($XMLData);
       XMLData = Server(XMLData);
       string  XPost = "XMLData="+XMLData;
       ch = curl_init();    // initialize curl handle

        curl_setopt($ch, CURLOPT_URL,$URL); // set url to post to
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // store the return value as a string
        // 1 is an acceptable value for TRUE.
        curl_setopt($ch, CURLOPT_TIMEOUT, 4); // times out after 4s
        curl_setopt($ch, CURLOPT_POSTFIELDS, $XPost); // add POST fields

        $result = curl_exec($ch); // execute the process
        curl_close($ch);

This worked ok, but it has been decided to go completely ASP.net / C# and I am now trying to convert this into an HTTPWebRequest where I am now getting this 303 error about the xml.

Below is my code for that

        HttpWebRequest request = null;
        string buf="";
        string fullbuf="";
        bool result = false;

        try{
            //string msgArg = "Call from Gregg";
            string MESSAGE_SENDER_ADDRESS = System.Environment.MachineName;

         string URL = "http://" + phoneIp + "/forms/push";
        Log.WriteLine("Sending message to x"+phoneExtn+" ("+phoneIp+") --- ", Log.DEBUG_LEVEL.TERSE);

        string XMLData = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?><Push alert=\"1\" type=\"display\" mode=\"normal\" > <go href=\"http://" + 
            tps + "/"+ casName + "/" + appName + "/Messages/"+ fname + "\" method=\"get\"></go> </Push>";

        // Build the push message
        // Was  XMLData = urlencode($XMLData);
        //XMLData = Server(XMLData);
        string  XPost = "XMLData="+XMLData;
            //string phoneextArg = "4061";
            string message;

            message = "http://" + phoneIp + "/forms/push";



        byte[] bytes = Encoding.UTF8.GetBytes(XMLData);
        request = (HttpWebRequest) WebRequest.Create(message);
        request.Method = "POST";
        request.ContentLength = bytes.Length;
        request.ContentType = "text/xml";
        request.Timeout = 600000;

            using (Stream requestStream = request.GetRequestStream())
        {
            requestStream.Write(bytes, 0, bytes.Length);
        }

            Log.WriteLine("Send Push: XMLData = " + XMLData, Log.DEBUG_LEVEL.TERSE);


        }


        catch (Exception ex)
        {


            Log.WriteLine( "Error from Send Push Request: " + ex.Message, Log.DEBUG_LEVEL.TERSE);
        }

I have a response after this that shows the Response and the response in full ends up being

Push Status: 301 XML document not valid

Any help would be great. thanks!!